Although breeds do have some common traits and tendencies, breed isn't everything, and the behaviour of your dog is more a result of how you teach it than the instincts that it was born with.

I agree my 2 cats are a lot more comfortable with my new puppy and it's only been 3 weeks...both my cats are over 8yrs old and now they pretty much have got it all figured out. We have had no fighting or injuries at all. We did have to spend a bit more reassurance time with the cats but so far everything is going well. The only thing that's really come up is when they surprise each other turning corners or walking by.